Magnetic slip-clutch and winding mechanism



June 7, 1932. F. HONIG 1,862,267

MAGNETIC SLIP CLUTCH AND WINDING MECHANISM Filed March 14, 192 5 Sheets-Sheet l June 7, 1932. HON;

I MAGNETIC SLIP CLUTCH AND WINDING MECHANISM Filed March 14, 1927 3 Sheets-Sheet 2 June 7, 1932. F. HONIG 1,862,267

MAGNETIC SLIP CLUTCH AND WINDING MECHANISM Filed March 14, 1927 I5 Sheets-Sheet 3 Jzderzfar;

Patented June 7, 1932 UNITED STATES PATENT OFFICE FRANK HONIG, OF OAK PARK, ILLINOIS, ASSIGNOR TO C'YGLO CORPORATION, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS MAGNETIC SLIP-CLUTCH AND WINDING MECHANISM Application filed March 14, 1927. Serial No. 175,375.

This invention relates particularly to magnetic slip-clutches and to Winding mechanism embodying a clutch of this character.

The invention is useful, particularly, in

winding wires or strands; and it findsan especially useful application in mechanism for winding fine wires, or delicate strands.

The primary object is to proyide a simple, cheap and effective mechanism for the purpose indicated.

Among the uses to which the invention may be'put, one may mention the wmdi ngof wire on cores or spools; the driving ot sinnning or doubling spindles in the manufacture of yarn or thread; the driving of the winding flier in manufacturing silk covered or cotton covered electrical conductors of fine sizes, etc. Where wire is drawn, wound on metallic spools, and then annealed after, the proper winding of the wire on the spool in the first instance may render it unnecessary to rewind onto a fresh spool after the annealing operation. The use of the ma netic slip-clutch herein described is aval able for properly regulating the winding of the wire on the metallic spool prior to the annealing operation.

The improved device is capable of nicely regulating the tension of the winding, regardless of the increase in diameter which occurs as the wire is wound on the spool. In other words, an equalized or uniform tension is maintained throughout the winding operation, and thus may eliminate the necessity of rewinding the wire after it has been annealed. The result is an improved quality of wire at reduced cost.

In winding operations, such as are per formed when silk, cotton, or other fibrous insulating material is wound on a relatively fine wire, it is essential to maintain a uniform and unvarying tension on the winding flier. Also, in twisting or spinning yarn-like materials, the spindle is called upon to do such operation effectively for different sizes and different degrees of lineness, calling for a different tension for each situation, which it has hitherto been dithcult or impossible to provide. For pur- 50 poses of this character, the invention provides a simple and inexpensive means for efi'ecting the winding with the proper degree of tension.

The invention is illustrated in a preferred embodiment in the accompanying drawings, in which- Fig. 1 is a broken view, partly in section and partly in elevation of a wire-drawing machine having the take-up spool actuated by a mechanism embodying the improved magnetic slip-clutch; Fig. 2, a broken section taken as indicated at line 2 of Fig. 1; Fig. 3, a sectional view of the outer clutchmember shown in Fig. 1, the section being taken as indicated at line 3 of Fig. 1; Fig. 4, a broken sectional View taken as indicated at line 4 of Fig. 1; Fig. 5, a View of the inner clutch-member shown in Fig. 1; Fig. 6, a diagrammatical view illustrating the relative movement of the permanent magnets and poles employed in the clutch; Fig. 7 a view partly in section and partly in plan of a modified form of inner clutch-member; Fig. 8, a broken sectional view taken as indicated at line 8 of Fig. 3; Fig. 9, a view partly in section and partly in elevation, showing the improved magnetic slip-clutch applied to the spindle of a spinning, doubling, or winding machine.

Referring to Figs. 1-6 and Fig. 8, A designates a frame; B, a wire-drawing block, or capstan; C, a final reducing die of the wiredrawing machine; D, an arbor equipped with a take-up spool D, with which is associated a wire distributor D E, an outer clutch-member secured to the inner end of the arbor D; F, an inner clutch-member splined on a shaft F which is operated through the medium of a gear-train F from the capstan-shaft B; and G, mechanism for automatically regulating the position of the inner clutch-member F with respect to the outer clutch-member E and thus varying the air-gap between said clutch-members.

In Fig. 7, F designates an inner clutch member which may be used in lieu of the clutch-member shown in Fig. 5, and which possesses some advantages thereover.

Referring to Fig. 1, the wire C is drawn from the die C, makes one or more turns about the capstan B, then passes over a roller 1 with which the regulating lever of the mechanism G is equipped, thence about an idler 2, and,thence over a ooved wheel 3 of the distributor D and ally is deposited by the distributor upon the spool D.

The arbor D is mounted in anti-frictional bearings 4 with which the frame A is equipped. The spool D is demountabl carried on the arbor, from which the spoo may be removed by first removing the member 5 which has threaded connection (not shown) with the arbor.

In the illustration given, the outer clutchmember E comprises a bell-shaped member 6 of insulating material; and magnetic polepieces 6 arranged as insets in the inner frusto-conical surface of the annular flange 6". The magnetic bars 6 are in substantially parallel relation with respect to each other, and are locked in position by a split ring 6 which engages an annular groove, as will be understood'from Figs. 1, 3 and 8.

The hubortion of the bell-shaped member 6 is fixe y secured to the inner end of the arbor D.

The inner clutch-member F comprises a tubular head 7 which is splined on the shaft F and capable of moving longitudinally thereon; and permanent magnets 7 a mounted on the outer frusto-conical surface of the member 7. In the illustration given (Figs. 5 and 6) four horseshoe magnets are employed, these magnets being suitably curved to conform to the circumferential surface of of the member 7. The magnets are shown secured to the member 7 by means of screws 7", which may be of brass. The member 7 may be of brass, also. By a reference to Fig. 5, it will be noted that the m ets are so mounted on the member 7 that t e web portions, or crowns of the magnets, are placed in the direction of rotation of the member 7.

The slope, or taper, of the frusto-oonical surfaces of the outer and inner clutch-members with reference to the axis is small, preferably about 6 (12 included angle). This permits the inner clutch-member to be thrust into the outer clutch-member a considerable distance, or very short distance, as may be desired; and this enables the magnetic flux between the inner and outer clutch-members to be varied within rather a wide range. In practice, the clutch member F will be rotated faster than would be necessary to take up the wire delivered by the capstan B were the clutch-member E to rotate at the same speed as the member F. In practice, a slip will occur, and it is desirable to rotate the clutch member F about 15% faster than the member E.

The mechanism G for controlling the position of the inner clutch member F comprises a yoke 8 pivoted at 8" and equipped with rollers 8 which engage an annular groove 9 with which the member 7 is provided; a link 10 connected with the lower end of the member 8; and a lever 11 supported on a pivot 11 and having its short arm connected with the link 10 and its lon arm equi ed with the roller 1 over whicfi the wire passes.

A s ring 12 is connected with the lower end 0 the yoke lever 8 and tends to thrust the inner clutch-member into the outer clutch-member. Tension of the spring 12 may be regulated by means of a screw 13.

The distributor device D is carried by a bar D which may be slowly reciprocated by any suitable means (not shown).

In the modified form of inner clutchmember shown in Fig. 7, the device comprises a tubular head 14 which may be of brass; permanent magnets 15 in the formof incomplete rings extending about the outer circumferential surface of the member 14; insulation rings 16 interposed between the magnets 15; and a retainer rin 17 at the small" end of the cone and whic 1s secured to the member 14 by means of screws 17. The gaps at the ends of the s lit-ring magnets are desi ated 15. It is o vious that the member 3 may be substituted for the member F in the construction shown in Fig. 1.

In the illustration given in Fig. 9, the improved magnetic slip-clutch is shown up lied to a spindle device adapted to be used for par oses of the kind indicated in Seele et al. atent No. 1,528,384, granted March 3, 1925. In the construction illustrated, H designates a frame member which carries a bolster H within which is journalled a spindleshaft I, the bolster being provided internally wlth bearings 18 and 18" for the spindle shaft I; I an outer clutch-member adjustably mounted and securely fixed on the shaft I; J, a combined inner clutch-member and pulley journalled on the bearing surface 19 of an upwardly-extending hub-portion with which the bolster H is provided, the member J being equipped below with the pulley with a sleeve-extension which extends into a thrust bearing 20 with which the bolster is provided.

The inner clutch-member is provided above the pulley, designated 21, with a 'frustoconical surface of slight taper, which is encircled by permanent ring-magnets 22, which are separated by spacers 22'.

The outer clutchmember I is a bell-shaped member having a hub portion 23 firmly secured to the spindle-shaft I. The member I' is provided with a flange 23 whose inner surface has a slight taper and is equipped with magnetic pole-pieces 24.

The inner clutch-member may be rotated through the medium of the pulley 21, and the outer'clutch-membe rwill be rotated by the magnetic pull between the clutch-members.

The spindle-shaft I rests at its lower end on an anti-friction ball 25 which serves as a thrust-bearing. The position of the ball 25 may be adjusted by a screw 26 which extends through the lower end of the bolster and is equipped with a lock nut 27. Thus, the shaft I may be adjusted vertically, so that the inner clutch-member will extend a greater or less distance into the outer clutch-member, according to the magnetic pull which is desired.

In the operation of the mechanism shown in Fig. 1, the wire is drawn through the die C onto the capstan B, and is taken from the capstan to the take-up spool D, the wire passing, in'its course, about the roller 1 of the regulating lever 11. The inner clutch-member F is driven from the capstan through the medium of gearing F, and the inner clutchmember exerts a magnetic pull on the outer clutch-member sufiicient to turn the arbor D at ,thedesired speed. If an undue stress comes upon the wire H during-the take-up operation, the lever 11 will be swung to the right from the position shown in Fig. 1, thus retracting the inner clutch-member, and so reducing the magnetic pull between the clutch-members. If, for any reason, there is a slackening of the wire being wound on the take-up spool, the lever 11 will be permitted to swing to the left, so that the inner clutch-member will be introduced further into the outer clutch-member and thus will exert a stronger pull and tend to speed up the rotation of the take-up spool.

By the mechanism shown, the tension of the wire being wound upon the take-up spool,

may be regulated with nicety, so that a substantially uniform tension will be exerted upon the wire during the whole period while it is being wound upon the take-up spool.

It will be obvious to those skilled in the art that the invention may be used advantageously in many analogous situations: also that the use of permanent magnets simplifies the construction: also that since no energizing windings are .used to produce magnetic flux. the device is substantially non-inductive, and thus the device remains very uniform throughout the operation and for a long period of time. There is always a slip between the members E and F, inasmuch as these members are not positivelv connected together. and the ma gnetic flux is the medium employed for effecting rotation of the outer member, being sufiiciently strong for the purpose, and vet flexible enough to permit of the slip which may be necessary to meet the varying exigencies which occur in operation.- Where a fine wireis wound upon a spool. the invention permits uniform windmg and eliminates the crushing efiect of the outer convolutions. It is obvious that in certain situations-the automatic variation in the gap between the inner and outer clutchmembers may be eliminated, and any suitable means, such as adjusting screws, may be used for adjusting the inner and outer clutchmembers with relation to each other to meet the particular need. In such a case, the magnetic pull remains constant, but suflicient variation in slippage will occur to take care of any slight variations, such as may be due to vibrations, or other causes.

The foregoing detailed description has been given for clearness of understanding only, and no unnecessary limitations should be understood therefrom, but the appended claims should be construed as broadly as permissible in view of the prior art.

What I claim as new and desire to secure by Letters Patent, is:

1. In means of the character set forth, a rotary driving-member, a rotary drivenmember, a series of permanent ring magnets carried by one of said rotary members, co-acting magnetic members carried by the other rotary member, and means for regulating the number of magnets which co-act eflect-ively with the magnetic members.

2. In means of the character set forth, a rotary driving-member equipped with a series of ring magnets in juxtaposition, and a rotary driven-member telescopically related to said driving-member and equipped with pole pieces co-acting with said magnets.

3. In a spindle, a spindle-shaft equipped with a clutch-member, a driving-pulley equipped with a clutch-member, permanent magnets in the form of incomplete rings carried by one of said members, pole pieces carried by the other of said members, and means for adjusting said clutch-members with relation to each other.

4. In a spindle, a spindle-shaft equipped with a clutch-member, a driving-pulley equipped with a clutch-member, permanent magnets in the form of incomplete rings carried by one of said members, pole pieces carried by the other of said members, and means for adjusting said spindle-shaft to vary the relative positions of said clutch members.

5. In a spindle, a supporting frame member; a spindle-shaft 'ournalled therein; means for adjusting said shaft longitudinally; a bell-shaped clutch-member secured to said shaft; a pulley journalled on said frame member having a conical clutch-member extending into said firstrmentioned clutchmember; permanent magnets carried by one of said clutch-members; and pole-pieces carried by the other of said clutch-members, the

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